Where is the central ray directed to enter on the Water's sinus? ...

[mpobi80]

Where is the central ray directed to enter on the Water's sinus?
 
 the occipital bone
  the acanthion
  the frontal bone
  the parietal bones

Question 2

Which scale of contrast is described as having fewer shades of gray, displaying more black and white?
 
 long scale
  mid scale
  low scale
  high scale

[lucas dlamini]

Answer to Question 1

the parietal bones

Rationale: The CR is directed to enter the parietal bones on the Water's method for sinuses.

Answer to Question 2

high scale

Rationale: High scale or short contrast is a scale of contrast with greater differences between the shades, making the contrast scale more black and white.

[mpobi80]

Excellent

[jamesnevil303]

Thanks for the timely response, appreciate it